12V Dimmer/Fader

Discussion in 'The Projects Forum' started by wcavanagh, Sep 11, 2007.

  1. wcavanagh

    Thread Starter New Member

    Aug 27, 2007
    7
    0
    Hi everyone.

    Im looking at making a simple 12V lamp fader. What I want is when 12V is supplied to the circuit, it fades up the output to 12V over say 8 seconds. The output load will be no more than 4A at 12V DC. Also I need to control the 12V side not the Grd side, so I guess PNP Tranny, or P Channel MOSFET might be the way to go. Any ideas at all as im stick. I found a circuit, this appranty dims, so would need a reverse of this.

    Any help would be fantastic.

    Cheers
    Will
     
  2. wcavanagh

    Thread Starter New Member

    Aug 27, 2007
    7
    0
    Think I got it sussed, now. have managed to simulate what I need in Livewire, have deisgned PCB and ordered a prototype. Fingers crossed :)
     
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